Seems that you did not read the README:
There are two encoding modes, RGB and B/W. It uses a pixel-to-data width of 2x2, but says YouTube's compression algorithm is brutal, and one corrupted pixel already renders the whole thing corrupted.
There are two encoding modes, RGB and B/W. It uses a pixel-to-data width of 2x2, but says YouTube's compression algorithm is brutal, and one corrupted pixel already renders the whole thing corrupted.
Now, if you're using a 4:4:4 format to do this, then you should be able to use smaller chroma metapixels (I still wouldn't use the full chroma resolution, though, unless you're using a high bitrate or a lossless codec). However, that risks data corruption if passed through a pipeline that downsamples the chroma.